Saltwater Etching Instructions

monk

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be advized-- the process will release chlorine gas. very bad for yer lungs ! i forgot to mention ferric chloride. works good, re useable, not too xpensive. caswell plating sells the stuff.
 
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rweigel

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Dec 22, 2017
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France (north of Alsace, close to Germany)
When you are patient, you can etch copper with powdered sulfur and olive oil. No, I’m not joking, it works. I got the recipe from a french book. I use it as substitute for liver of sulfur, to blacken silver and copper. If you leave it longer on the surface, it attacks copper. Works best warm, I heat up the piece to 60-80°Celsius.

Cheers

Ralf
 

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